Finding the Fourth Proportional to 9,054.57, 12,495.33 and 5,277.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.57 : 12,495.33 = 5,277.45 : x
2. Step 2: Convert to fraction form
   9,054.57/12,495.33 = 5,277.45/x
3. Step 3: Cross multiply
   9,054.57x = 12,495.33 × 5,277.45
4. Step 4: Simplify right side
   9,054.57x = 65,943,479.31
5. Step 5: Solve for x
   x = 65,943,479.31/9,054.57
6. Step 6: Final answer
   x = 7,282.89